various improvements: - speedup in slide mode: don't paint desktops which are not visible - key events are not dropped during start phase - parts of windows from different desktops are faded in/out during start/stop animation - manual (mouse) rotation is reverted in stop animation - Cube Cap Texture is positioned oriented towards desktop 1 - fix artifacts from different desktops after stop animation

svn path=/trunk/KDE/kdebase/workspace/; revision=835534